2ca3(po4)2 + 6sio2 + 10c --> p4 + 6casio3 + 10co how many grams of calcium phosphate are required to give 30.0g of phosphorus? ? i got 542g but i think that is way off. i did 30g p/30.97g to get .989 moles p • 2ca= 1.94 mole ca• 279.21g to get from miles to grams. explain how to do it and if you can where i went wrong.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?